//
//  HDLanguageVC.m
//  HDWuDaDaoServiceCenter
//
//  Created by HDNiuKuiming on 2017/4/8.
//  Copyright © 2017年 HDNiuKuiming. All rights reserved.
//

#import "HDLanguageVC.h"
#import "HDWebVC.h"

#import <sys/socket.h>
#import <sys/sockio.h>
#import <sys/ioctl.h>
#import <net/if.h>
#import <arpa/inet.h>

#include <ifaddrs.h>
#include <arpa/inet.h>
#include <net/if.h>

#define IOS_CELLULAR    @"pdp_ip0"
#define IOS_WIFI        @"en0"
//#define IOS_VPN       @"utun0"
#define IP_ADDR_IPv4    @"ipv4"
#define IP_ADDR_IPv6    @"ipv6"

@interface HDLanguageVC ()

@end

@implementation HDLanguageVC

#pragma mark
#pragma mark -------- Init Methods --------

- (void)viewDidLoad {
    [super viewDidLoad];
    [[HDDeclare sharedDeclare] userIDRequestAction]; // 请求机器号
    NSString *nowMacStr = [self getIPAddress:YES];
    LOG(@"Now IP is %@", nowMacStr);
}

- (IBAction)languageChoiceAction:(UIButton *)sender {
    NSInteger btnTag = sender.tag;
    if (btnTag == 101) {
        [self performSegueWithIdentifier:@"languagePushToTabLine" sender:nil];
    }
    else if (btnTag == 102) {
        UIStoryboard *board = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
        HDWebVC *webVC = [board instantiateViewControllerWithIdentifier:@"HDWebVC"];
        webVC.webPath = @"http://47.93.81.30/wdd/resource/english.html";
        [self.navigationController pushViewController:webVC animated:YES];
    }
    else if (btnTag == 103) {
        UIStoryboard *board = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
        HDWebVC *webVC = [board instantiateViewControllerWithIdentifier:@"HDWebVC"];
        webVC.webPath = @"http://47.93.81.30/wdd/resource/french.html";
        [self.navigationController pushViewController:webVC animated:YES];
    }
}

- (NSString *)getIPAddress:(BOOL)preferIPv4
{
    NSArray *searchArray = preferIPv4 ?
    @[ /*IOS_VPN @"/" IP_ADDR_IPv4, IOS_VPN @"/" IP_ADDR_IPv6,*/ IOS_WIFI @"/" IP_ADDR_IPv4, IOS_WIFI @"/" IP_ADDR_IPv6, IOS_CELLULAR @"/" IP_ADDR_IPv4, IOS_CELLULAR @"/" IP_ADDR_IPv6 ] :
    @[ /*IOS_VPN @"/" IP_ADDR_IPv6, IOS_VPN @"/" IP_ADDR_IPv4,*/ IOS_WIFI @"/" IP_ADDR_IPv6, IOS_WIFI @"/" IP_ADDR_IPv4, IOS_CELLULAR @"/" IP_ADDR_IPv6, IOS_CELLULAR @"/" IP_ADDR_IPv4 ] ;
    
    NSDictionary *addresses = [self getIPAddresses];
    NSLog(@"addresses: %@", addresses);
    
    __block NSString *address;
    [searchArray enumerateObjectsUsingBlock:^(NSString *key, NSUInteger idx, BOOL *stop)
     {
         address = addresses[key];
         if(address) *stop = YES;
     } ];
    return address ? address : @"0.0.0.0";
}

//获取所有相关IP信息
- (NSDictionary *)getIPAddresses
{
    NSMutableDictionary *addresses = [NSMutableDictionary dictionaryWithCapacity:8];
    
    // retrieve the current interfaces - returns 0 on success
    struct ifaddrs *interfaces;
    if(!getifaddrs(&interfaces)) {
        // Loop through linked list of interfaces
        struct ifaddrs *interface;
        for(interface=interfaces; interface; interface=interface->ifa_next) {
            if(!(interface->ifa_flags & IFF_UP) /* || (interface->ifa_flags & IFF_LOOPBACK) */ ) {
                continue; // deeply nested code harder to read
            }
            const struct sockaddr_in *addr = (const struct sockaddr_in*)interface->ifa_addr;
            char addrBuf[ MAX(INET_ADDRSTRLEN, INET6_ADDRSTRLEN) ];
            if(addr && (addr->sin_family==AF_INET || addr->sin_family==AF_INET6)) {
                NSString *name = [NSString stringWithUTF8String:interface->ifa_name];
                NSString *type;
                if(addr->sin_family == AF_INET) {
                    if(inet_ntop(AF_INET, &addr->sin_addr, addrBuf, INET_ADDRSTRLEN)) {
                        type = IP_ADDR_IPv4;
                    }
                } else {
                    const struct sockaddr_in6 *addr6 = (const struct sockaddr_in6*)interface->ifa_addr;
                    if(inet_ntop(AF_INET6, &addr6->sin6_addr, addrBuf, INET6_ADDRSTRLEN)) {
                        type = IP_ADDR_IPv6;
                    }
                }
                if(type) {
                    NSString *key = [NSString stringWithFormat:@"%@/%@", name, type];
                    addresses[key] = [NSString stringWithUTF8String:addrBuf];
                }
            }
        }
        // Free memory
        freeifaddrs(interfaces);
    }
    return [addresses count] ? addresses : nil;
}

#pragma mark
#pragma mark -------- Dealloc Methods --------

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}


@end
